"rapid attack," 1939, from German Blitzkrieg, from Krieg "war" (see kriegspiel) + Blitz "lightning," from Middle High German blicze, back-formation from bliczen "to flash," from Old High German blecchazzen "to flash, lighten" (8c.), from Proto-Germanic *blikkatjan, from PIE root *bhel- (1) "to shine, flash, burn."
blithe
blither
blithering
blithesome
blitz
blitzkrieg
blizzard
bloat
bloated
blob
bloc